(3)Caching parameters

The following parameters are used to optimize the HDD Read-Ahead caching operations under the system environments. Refer to Chapter 2 "Data Buffer Management" of the SCSI Logical Interface Specifications for further details.

 

Parameter

 

Default value

• IC:

Initiator control

 

0 (Drive-specific

 

 

 

control (page

 

 

 

cache))

• RCD:

Disabling Read-Ahead caching operations

 

0 (enabled)

• WCE:

Write Cache Enable

 

1 (enabled)

• MS:

Specifying the multipliers of "minimum

 

0 (Specifying

 

prefetch" and "maximum prefetch" parameters

 

absolute value)

• DISC:

Prefetch operation after track switching during

 

1 (enable)

 

prefetching

 

 

• Number of blocks for which prefetch is suppressed

 

X'FFFF'

• Minimum prefetch

 

X'0000'

• Maximum prefetch

 

X' XXXX'

 

 

 

(1 cache segment)

• Number of blocks with maximum prefetch restrictions

 

X'FFFF'

• Number of segments

 

X'08'

Notes:

1.When Read-Ahead caching operations are disabled by the caching parameter, these parameter settings have no meaning except write cache feature.

2.Determine the parameters in consideration of how the system accesses the disk. When the access form is not determined uniquely because of the processing method, the parameters can be re-set actively.

3.For sequential access, the effective access rate can be increased by enabling Read-Ahead caching operations and Write Cache feature.

(4)Control mode parameters

The following parameters are used to control the tagged queuing and error logging.

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Fujitsu MAW3073NC/NP, MAW3300NC/NP, MAW3147NC/NP manual Disc, Xffff, Xxxx
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MAW3147NC/NP, MAW3073NC/NP, MAW3300NC/NP specifications

Fujitsu has established itself as a key player in the world of hard disk drives, and their MAW3073NC/NP, MAW3300NC/NP, and MAW3147NC/NP models showcase exemplary engineering and innovative technology. These drives are designed primarily for enterprise applications, providing robust performance, reliability, and data integrity in demanding environments.

One of the standout features of the Fujitsu MAW series is its high storage capacity. The MAW3073NC/NP model comes with a generous 73 GB capacity, while the MAW3300NC/NP boasts 300 GB, and the MAW3147NC/NP offers 147 GB of storage. This range makes them suitable for various applications, from databases to data-intensive software.

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